RBI Analyses

About RBI Analysis

An RBI Analysis is a combination of linked RBI Analysis records and their successor records. These records contain risk information about the RBI Component for which the analysis was created. There are two kinds of RBI Analyses: RBI 581 and RBI 580.

  • The details of an RBI 580 analysis are stored in an RBI Criticality Analysis record. It is based on the API 580 specification for Risk Based Inspection requirements and methodologies, and is the type of analysis provided in baseline RBI.
  • The details of an RBI 581 analysis are stored in an RBI 581 Risk Analysis. It is based on the API 581 specification, and is provided by the RBI 581 module.

Depending on the requirements of the organization, generally you will use one of the two types of analyses, but not both.

Note: Unless otherwise specified, RBI Analysis procedures are the same for both RBI 581 and RBI 580 analyses. Generally, RBI 581 Risk Analysis and RBI Criticality Analysis records will be referred to collectively as RBI Analyses.

Details

There are two types of RBI Analyses:

  • Main RBI Analysis: An RBI Analysis that represents current information about the RBI Component and the operating environment. You can use the information in a main RBI Analysis as the starting point for a child What If Analysis.
  • What-If Analysis: A child analysis of a main RBI Analysis. What If Analyses allow you to calculate the risk associated with an RBI Component under hypothetical circumstances or at some future date. For example, you might want to see what the risk would be if you changed the operating pressure or what the risk could be in a few years.
Note: While the RBI Analysis is linked to child What-If Analyses (through the Has RBI Analysis family), those child RBI Analysis records are not considered part of the main RBI Analysis. Instead, they are considered part of their own RBI Analysis.

RBI Analysis

The following example shows the records that you would see after creating a What-If Analysis from a main RBI Analysis. Yellow boxes represent records in the main RBI Analysis, and orange boxes represent records in the What-If Analysis. These two root RBI Analysis records are linked to each other.



About Active Analysis

An RBI Criticality Analysis or a What If Analysis can be active or inactive. An active analysis is the one on which recommendations and tasks for a particular RBI Analysis will be based. For an RBI Component, you can have only one active analysis. There is no limit, however, to the number of inactive analyses that can exist for an RBI Component.

When you create an analysis, it is in the Created state. If the analysis is active, you can then set the analysis to one of the following states in that order:

  • Risk Completed
  • Accepted by ASM

If the analysis is inactive, however, the state of the analysis will automatically be set to Archived. If you change the state of an analysis to Risk Completed, all the other analyses are marked inactive (i.e., their state is set to Archived).

About What-If Analysis

A What-If Analysis is a child analysis of a main RBI Analysis (or another What-If Analysis in the Risk Completed state) that allows you to calculate the risk associated with an RBI Component under hypothetical circumstances. What-If Analyses allow you to analyze hypothetical situations to determine how operational and procedural changes would impact the risk associated with a component's failure on a certain date.

When you create a What-If Analysis:

  • A record of the RBI Criticality Analysis or RBI Pipeline Analysis is created. For the What-If Analysis, however, the value in the Event Type field is populated with the value W.

    Note: For a normal RBI Analysis, the value in the Event Type field is blank.
  • The What-If Analysis is linked to the main analysis through the Has Child RBI Criticality Analysis relationship.
  • The Consequence Evaluation, Degradation Mechanisms (DMs), and Degradation Mechanism Evaluations (DMEs) linked to the main analysis are copied and linked to the What-If Analysis.
  • The Analysis ID of the What-If Analysis is in the following format: W <Analysis ID of the main analysis> <Number>, where <Number> is the sequential number of the What-If Analysis.
  • You can duplicate the What-If Analysis. You cannot, however, apply the What-If Analysis.
  • You can change the state of the What-If Analysis. The state assignments and operations that are applicable to an RBI Analysis are also applicable to a What-If Analysis.
  • GE Digital APM copies the values from the fields in the main analysis to the What-If Analysis. However, values in the following fields are not copied:
    • Fields in RBI Criticality Analysis:
      • Consequence Category Rolled Up
      • Driving Risk
      • Eff Date for Risk Analysis
      • Inspection Priority Rolled Up
      • Probability of Failure Rolled up
      • Risk Category

      • Risk Completed

      • Risk Completed Date

    • Fields in Criticality Consequence Evaluation:
      • Average Leak Rate

      • Cleanup Cost

      • Deinventory Time

      • Distance to End Effect

      • Estimated Leak Quantity

      • Estimated Release Rate

      • Final Phase

      • Flammable Affected Area

      • Initial Leak Rate

      • Leak Size

      • Pool Area

      • Probability of Ignition

      • Release Duration

      • Toxic Mix Release Rate

      • Toxicity Area

    • Fields in RBI Degradation Mechanisms
      • Combined Consequence

      • Inspection Priority

      • Probability of Failure

    • Fields in Criticality Env. Crack. Deg. Mech. Eval
      • Adjusted Years Last Inspection

      • DF

      • Likelihood Category

      • Updated Potential

      • Years in Service

      • Years Last Inspection

    • Fields in Criticality Int. Corr. Deg. Mech. Eval
      • DF

      • Estimated

      • Estimated Wall Loss

      • Fractional Wall Loss

      • Likelihood Category

      • Pressure at Minimum Thickness

      • Structural Minimum Thickness

      • Wall Ratio

      • Years in Service

    • Fields in Criticality Ext. Corr. Deg. Mech. Eval
      • Age

      • Area Humidity Factor

      • Calculated Corrosion Rate

      • Coating Factor

      • DF

      • Estimated Minimum Thickness

      • Estimated Wall Loss

      • Fractional Wall Loss

      • Insulation Condition Factor

      • Insulation Type Factor

      • Likelihood Category

      • Wall Ratio

      • Years in Service

About Inspection History

When you calculate an RBI Criticality Analysis, Degradation Mechanism Evaluations (DMEs) are used as an input to calculate the Probability of Failure. A key factor in calculating the Probability of Failure for the analysis is the assessment of previous inspections, which are contained in the Inspection History.

Details

As part of each analysis, you can choose the inspection for each DME. This selection assists in reducing uncertainty posed by the particular Degradation Mechanism (DM) and in determining its rate of deterioration. Each Inspection is quantitatively assessed to determine its effectiveness in achieving this goal.

You can select the Inspections used to populate the following fields on the Criticality Degradation Mech Evaluation datasheet for the calculation:

  • Use Combined Confidence
  • Equivalent Number of Inspections
  • Inspection Confidence

The resulting quantitative value, or Inspection History, indicates how effective prior inspections were at identifying the DM and the rate of degradation.

About Assigning Inspections to a Degradation Mechanism Evaluation (DME)

You can use Inspection Management to record inspection results for a piece of equipment. In each Inspection, you can specify the DM for which you were looking during the inspection.

In RBI, you use RBI Components to divide a piece of equipment into parts. You then define DMs for those components, and then conduct analyses for each RBI Component.

Assigning Inspections to DMEs in RBI

If an RBI Component represents parts of a piece of equipment that you have inspected in the past, and have recorded results in Inspection records, you can assign those inspections to the appropriate DMEs for that component. By doing so, you identify the inspections that were used to detect DMs for that component.

The type of analysis used will determine what happens when you assign an inspection to a DM. For any RBI 580 DME, the listed inspections fall within a specified 20-year window. When you are working with an RBI Analysis, GE Digital APM uses the values in the Inspection Confidence field of the Inspection records to automatically populate the following fields in the Criticality Degradation Mech Evaluation representing that degradation mechanism:

  • Inspection Confidence: Indicates how effective the last inspection was at detecting the DM and identifying the rate of degradation.
  • Equivalent Number of Inspections: Indicates the number of inspections that will be used when calculating the analysis.

Assigning PRD Inspections to DMEs

You can also assign inspections that are associated with pressure relief devices (PRDs) when you are working with an RBI PRD Criticality Analysis. When you do so, the Inspection records that you select will belong to the PRD Pop Test Checklist family, and values that are stored in the PRD Pop Test Checklist records that you select will be used as inputs to RBI PRD Criticality Analysis calculations. Specifically, values in the following fields in the PRD Pop Test Checklist records are used in RBI PRD Criticality Analysis calculations:

  • Completion Date
  • Inspection Confidence
  • Leak Test Results
  • Over Pressure Test Results

For any PRD DME, the listed inspections fall within a specified 20-year window. The Date in Service field must contain a date prior to the date in the Completion Date field. The Completion Date and Inspection Confidence fields in the PRD Pop Test Checklist must contain values in order to assign a PRD Pop Test Checklist to a DM that is associated with an RBI PRD Criticality Analysis.

The Leak Test Results and Over Pressure Test Results fields, however, do not have to contain values in order to assign an Inspection record of this type to a DME. Instead, in this case, the following default values will be used in the RBI PRD criticality Analysis calculations:

  • Leak: This value is used as an input by default when the Leak Test Results field does not contain a value in the PRD Pop Test Checklist that you assign to a DME.
  • Fail: This value is used as an input by default when the Over Pressure Test Results field does not a value in the PRD Pop Test Checklist that you assign to a DME.

When you are working with an RBI 581 Risk Analysis or an RBI Criticality Analysis, (i.e., not an RBI PRD Criticality Analysis), if you want to specify manual values, you can choose to override the automatic Inspection Confidence and Equivalent Number of Inspections. In most cases; however, you will want GE Digital APM to populate the fields automatically to avoid subjective interpretations of the values.

About Inspection Priority

When you calculate an RBI Analysis, in each RBI Degradation Mechanism linked to the RBI Analysis, the values in the following fields are calculated automatically:

  • Probability of Failure
  • Combined Consequence

Together, the values are used to determine the Inspection Priority, which is stored in the Inspection Priority (Unmitigated Risk) field in the same RBI Degradation Mechanism.

The Inspection Priority is used to determine the driving RBI Component when a single pressure relief device protects more than one RBI Component. The RBI Component that belongs to the RBI Analysis whose Inspection Priority has the most conservative value (the lowest number) becomes the driving RBI Component. Recommendation are generated based on the Inspection Priority.

Inspection Priority and Risk Matrices

Specifically, to determine the Inspection Priority, the Probably of Failure and Combined Consequence are plotted on a matrix:



Access an RBI Criticality Analysis

About This Task

Procedure

  1. Access the component that contains the RBI Analysis that you want to access.
  2. Below the graph, select the RBI Analysis that you want to access.

    The Analysis Details section appears, displaying the analysis datasheet.



    Note: If needed, you can modify values in the available fields, review the required fields , and then select to save your changes.

Create an RBI Analysis

About This Task

You can create an RBI Criticality Analysis for an RBI Component.

Procedure

  1. Access the RBI Component for which you want to create an RBI Criticality Analysis.
  2. Below the graph, select , and then select Semi-Quantitative (580).
    A new analysis is created, and the Analysis Details section appears.
    Note: When an analysis is created, the Consequence Evaluations and Degradation Mechanisms corresponding to the Potential Degradation Mechanisms linked to the selected component are also created.
  3. Enter values in the available fields.
  4. Review the required fields.
  5. In the upper-right corner of the section, select .
    The RBI analysis is created.

Results

  • For each Potential Degradation Mechanism (PDM) linked to the Component, a Degradation Mechanism (DM) is added to the Analysis.

What To Do Next

Add a What-If Analysis

About This Task

You can add a What-If Analysis to the following types of analyses:

  • RBI Criticality Analysis
  • RBI Pipeline Analysis

When you create a What-If Analysis, a copy of the main RBI Analysis is created. In the What-If Analysis, however, the value in the Event Type field is populated with the value W.

You cannot add a What-If Analysis to an RBI PRD Criticality Analysis.

Procedure

  1. Perform one of the following sets of steps:
    1. Access the analysis to which you want to add a What-If Analysis.

    2. In the upper-right corner of the workspace, select , and then select Create What If Analysis.

    -or-

    1. Access the component that is linked to the analysis to which you want to add a What-If Analysis.

      Below the graph, a list of analyses linked to the component appears in a grid.

    2. Select the check box that corresponds to the analysis to which you want to add a What-If Analysis.
    3. In the upper-right corner of the grid, select .

    The Create What If Analysis window appears.



  2. In the Create What If Analysis window:
    • In the Scenario ID box, enter an ID to identify the scenario.
    • In the Scenario Reference Date box, select a date.
  3. Select Done.

    The What-If Analysis is created and linked to the main analysis. The Analysis workspace appears, displaying the Analysis Details section.

    Note: If needed, modify values in the available fields, and then select to save your changes.

Results

  • The Analysis ID of the What-If Analysis is in the following format: W <Analysis ID of the main analysis> <Number>, where <Number> is the sequential number of the What-If Analysis.
  • All the fields (with a few exceptions) in the What-If Analysis are populated with values in the main analysis fields.
  • The Consequence Evaluation, Degradation Mechanisms (DMs), and Degradation Mechanism Evaluations (DMEs) linked to the main analysis are copied and linked to the What-If Analysis.

Calculate an RBI Criticality Analysis

Before You Begin

  • Make sure that you have entered values in all the required fields. Otherwise, the calculation fails.
  • Make sure that a DM is linked to the RBI Criticality Analysis. Otherwise, the calculation fails.

About This Task

This topic describes how to calculate a single RBI Analysis. In addition to an individual analysis, you can also calculate:
Tip: This procedure also applies to calculating a What-If Analysis.

Procedure

  1. Access the RBI Criticality Analysis that you want to calculate.
  2. Select .
    Note: The button is enabled only for RBI Analyses in the Created state.

    The Analysis Calculation window appears, displaying the calculation progress and a log detailing any errors. If the calculation fails, a list of the required fields appear in an error report at the bottom of the Analysis Calculation window.



  3. After the calculation is complete:
    • To view log details, select View Complete Log.
    • To close the window, select Close.

    The RBI Criticality Analysis is calculated.

Calculate all RBI Criticality Analyses Associated with a Process Unit

Before You Begin

  • Ensure that you have entered values in all the required fields. Otherwise, the calculation fails.
  • Make sure that a DM is linked to each of the RBI Criticality Analyses. Otherwise, the calculation fails.

About This Task

This topic describes how to calculate all RBI Analyses associated with a single Process Unit. You can also calculate:

Procedure

  1. Access the Unit Summary workspace.
  2. On the upper-right corner of the page, select .

    The Analysis Calculation window appears, displaying the calculation progress and a log detailing any errors. If a calculation fails, a list of the required fields appear in an error report at the bottom of the Analysis Calculation window.



  3. After the calculation is complete:
    • To view the log details for all calculated analyses, select View Complete Log.

    • To view the log details for a single analysis, in the list, select that analysis.

    • To close the window, select Close.

    The RBI Criticality Analyses for the selected Process Unit are calculated.

  4. Optionally, if you want to view the status of all bulk analyze operations, on the upper-right corner of the Risk Based Inspection Overview page, select .
    The Schedule Logs page appears, displaying a list of all the operations in GE Digital APM that are in progress, along with the percentage of completion. You can also access a list of operations that have been successful or have failed.
    Tip: For more information on Schedule Logs, refer to the Schedule Logs section of the documentation.

Calculate all RBI Criticality Analyses Associated with a Single Asset or Corrosion Loop

Before You Begin

  • Ensure that you have entered values in all the required fields. Otherwise, the calculation fails.
  • Make sure that a DM is linked to each of the RBI Criticality Analyses. Otherwise, the calculation fails.

About This Task

This topic describes how to calculate all RBI Analyses associated with a single Asset or Corrosion Loop. You can also calculate:

Procedure

  1. Access the Asset Summary workspace of the Asset that is associated with the analyses you want to calculate.

    -or-

    Access the Corrosion Loop that is associated with the analyses that you want to calculate.

  2. In the upper-right corner of the section, select .

    The Analysis Calculation window appears, displaying the calculation progress and a log detailing any errors. If the calculation fails, a list of the required fields appear in an error report at the bottom of the Analysis Calculation window.



  3. After the calculation is complete:
    • To view the log details for all calculated analyses, select View Complete Log.

    • To view the log details for a single analysis, in the list, select that analysis.

    • To close the window, select Close.

    The RBI Criticality Analysis is calculated.

  4. Optionally, if you want to view the status of all bulk analyze operations, on the upper-right corner of the Risk Based Inspection Overview page, select .
    The Schedule Logs page appears, displaying a list of all the operations in GE Digital APM that are in progress, along with the percentage of completion. You can also access a list of operations that have been successful or have failed.
    Tip: For more information on Schedule Logs, refer to the Schedule Logs section of the documentation.

Calculate all RBI Criticality Analyses Associated with Multiple Assets

Before You Begin

  • Ensure that you have entered values in all the required fields. Otherwise, the calculation fails.
  • Make sure that a DM is linked to each of the RBI Criticality Analyses. Otherwise, the calculation fails.

About This Task

This topic describes how to calculate all the RBI Analyses associated with multiple assets. You can also calculate:

Procedure

  1. Access the Risk Based Inspection Overview page for the Functional Location that contains the assets for which you want to calculate all analyses.
  2. If you want to calculate analyses associated with all the assets in the functional location, then proceed to step 5. You cannot, however, calculate all analyses if you have selected Home on the Asset Hierarchy page.

    -or-

    If you want to calculate analyses associated with selected assets, then in the workspace heading, select the Assets tab.

    The Assets section appears.



  3. Select the check boxes that correspond to the assets for which you want to calculate all analyses.
  4. Select .
    Note: If you have selected Home on the Asset Hierarchy page, and have not selected any assets, then the button is disabled.

    A message appears, specifying the number of assets that you have selected, and asking you if you want to continue.

  5. Select Yes.

    The Analysis Calculation window appears, displaying a list of analyses that are sent for calculation, the asset and the component that each analysis is associated with, and the status of each calculation. If the calculation fails, a list of the required fields appear in an error report at the bottom of the Calculate Analysis window.



  6. After the calculation is complete:
    • To view the log details for all calculated analyses, select View Complete Log.

    • To view the log details for a single analysis, in the list, select that analysis.

    • To close the window, select Close.

    The RBI Criticality Analysis is calculated.

  7. Optionally, if you want to view the status of all bulk analyze operations, on the upper-right corner of the Risk Based Inspection Overview page, select .
    The Schedule Logs page appears, displaying a list of all the operations in GE Digital APM that are in progress, along with the percentage of completion. You can also access a list of operations that have been successful or have failed.
    Tip: For more information on Schedule Logs, refer to the Schedule Logs section of the documentation.

Generate a Report for an Asset

About This Task

This topic describes how to generate the following types of reports:

Procedure

  1. Access the Asset Summary workspace for the asset for which you want to generate the report.
  2. Select , and then:
    • If you want to generate an Asset Summary report, select Asset Summary Report.

      The Asset Summary report appears.



      -or-

    • If you want to generate an Asset Risk report, select Asset Risk Report.

      The Asset Risk report appears.



Access the Risk Matrix for an RBI Criticality Analysis

Procedure

  1. Access the analysis containing the Risk Matrix that you want to access.
  2. In the workspace, select the Risk Matrix tab.

    The Risk Matrix section appears, displaying the RBI Risk Matrix subsection.



    Tip: Refer to the Risk Matrix section of the documentation for details about working with the Risk Matrix.

Duplicate an RBI Criticality Analysis

About This Task

When you duplicate an RBI Criticality Analysis, you make an exact copy of the original RBI Analysis. The duplicated RBI Criticality Analysis is linked to the same RBI Component as the original RBI Criticality Analysis. To copy an RBI Criticality Analysis, and link it to a different RBI Component, you can apply an RBI Analysis.

Procedure

  1. Access the component that contains the RBI Criticality Analysis that you want to duplicate.
  2. Below the graph, select the check box next to the RBI Criticality Analysis that you want to duplicate, and then select .

    The Select Degradation Mechanisms window appears.



    Only Degradation Mechanisms (DMs) that can be applied to the duplicated analysis appear in the window. By default, the check boxes next to all the Degradation Mechanisms are selected.

  3. If you do not want a particular DM to be applied, clear the check box that corresponds to the DM.
  4. If you want the Recommendations to be copied, select the Copy Recommendations for Degradation Mechanisms check box. You can select this check box only if the Enable Recommendation To be Generated at Created State check box in the Global Preferences workspace is selected.
  5. Select Done.

    The RBI Criticality Analysis is duplicated.

    Note: Similarly, you can duplicate a What-If Analysis regardless of its state. The duplicated What-If Analysis is a copy of the main RBI Analysis.

Results

  • All the DMs that you have selected are copied and linked to the duplicated analysis.
  • If you have selected the Copy Recommendations for Degradation Mechanisms check box, then Recommendations are also copied.

Apply an RBI Criticality Analysis

About This Task

When you apply an RBI Criticality Analysis, you make a copy of the original RBI Criticality Analysis. The applied RBI Criticality Analysis is not automatically linked to the original RBI Component. Instead, the applied RBI Criticality Analysis can be linked to any RBI Component of the same type as the source component. To copy an RBI Criticality Analysis and link it to the same RBI Component, you can duplicate an RBI Criticality Analysis.

Procedure

  1. Access the component that contains the RBI Criticality Analysis that you want to apply.
  2. Below the graph, select the check box next to the RBI Criticality Analysis that you want to apply, and then select .

    The Select RBI Components to Apply Analysis window appears.



  3. In the Hierarchy section, navigate to and select the asset that contains the RBI Component to which you want to apply the analysis.

    A list of available RBI Components in the selected asset appears in the Available RBI Components section.



  4. Select the RBI Components to which you want to apply the analysis.

    The selected RBI Components appear in the Selected RBI Components column.



  5. Select Next.

    A list of Degradation Mechanisms (DMs) linked to the analysis appears.

  6. In each row containing the DMs that you want to link to the new analysis, ensure that the check box is selected.
  7. Select Done.

    The RBI Criticality Analysis is applied.

Finalize Risk of an RBI Criticality Analysis

You can modify the state of an RBI Criticality Analysis based on the available operation. For more information on State Assignments and Operations, refer to About RBI Criticality Analysis State Assignments and Operations.

Procedure

  1. Access the analysis whose state you want to modify.
  2. Select the button that indicates the current state of the analysis (that is, Created).

    A menu appears, displaying a list of operations that you can perform on the analysis to modify its state.



  3. Select Finalize Risk, and then select Done.
    Note: You can modify the state of an analysis to Risk Completed only if you have calculated the analysis.
    The state of the RBI Criticality Analysis is modified, and an Inspection Plan is created and linked to the parent asset of the analysis.
    Note:
    • If you want to access the Inspection Plan, select the Inspection Plan link.
    • When an RBI Criticality Analysis is not in the Created state, you cannot modify the analysis and the related Consequence Evaluations, Degradation Mechanisms, and Degradation Mechanism Evaluations through the Risk Based Inspection (RBI) module. You can, however, modify the fields that are not disabled when the record is accessed through Record Manager.


What To Do Next

Finalize Risk of Multiple RBI Criticality Analyses

About This Task

This topic describes how to finalize risk of the analyses that are linked to multiple assets or Corrosion Loops. You can finalize risk of only the analyses that are calculated and are in the Created state. You cannot finalize risk of multiple analyses that belong to the same component. In such cases, the status of the analyses that belong to the same component are not changed, however, the status of the remaining analyses are updated to Risk Completed.

Procedure

  1. Access the Risk Based Inspection Overview page, and then select the Assets tab.

    or

    Access the Unit Summary workspace of the Process Unit that is linked to the Corrosion Loops.

  2. In the Assets section, select the check boxes that correspond to the assets that contain the analyses for which you want to finalize risk.

    or

    Select the check box for each Corrosion Loop containing analyses for which you want to finalize risk.

    The button is enabled.
  3. Select .

    The Finalize Risk window appears, displaying only the analyses that are calculated and are in the Created state.



  4. Select the check box for each analysis for which you want to finalize risk.

    The Finalize Risk button is enabled.

  5. Select Finalize Risk.
    The selected analyses are moved to the Risk Completed state.
    Note: If an Inspection Plan does not exist for the parent asset of the analyses, an Inspection Plan is created and linked to the asset.
  6. Select Close.

What To Do Next

Delete an RBI Criticality Analysis

Before You Begin

You cannot delete an RBI Criticality Analysis if it is Active, has a child analysis, or has Recommendations.

  • If an RBI Criticality Analysis has a child analysis, delete the child analysis.
  • If an RBI Criticality Analysis has Recommendations, delete the recommendations.

Procedure

  1. Access the component containing the RBI Criticality Analysis that you want to delete.
  2. Below the graph, in the row containing the Analysis ID that you want to delete, select the check box, and then select .

    A message appears, asking you to confirm that you want to delete the RBI Criticality Analysis.

  3. Select Yes.

    The RBI Criticality Analysis is deleted.